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PubMed
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History
- Published online June 29, 2018.
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- Previous version (June 6, 2018 - 08:37).
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Copyright & Usage
© Macdonald. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly cited. To view a copy of the license, visit http://creativecommons.org/licenses/by/4.0/. When linking to this article, please use the following permanent link: https://doi.org/10.9745/GHSP-D-18-00158
Author Information
- Michael B. Macdonalda⇑
- aIndependent consultant, Catonsville, MD, USA.
- Correspondence to Michael Macdonald (macdonaldm{at}macito.net).